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January 2015

No, the title of this blog post is not a mistake. Delphi, including XE7, only implements services using NT APIs obsoleted since Windows 2000. Windows NT was EOLed in 2004, 2000 in 2010, and XP last year, yet Delphi still doesn't take advantage of the new APIs. What are the advantages? Well, using the "extended" RegisterServiceCtrlHandlerEx() and its HandlerEx() callback, services can receive more and useful notifications (control codes). The new control codes allow to be notified of and handle: